diff --git a/kallithea/templates/email_templates/button.html b/kallithea/templates/email_templates/button.html
--- a/kallithea/templates/email_templates/button.html
+++ b/kallithea/templates/email_templates/button.html
@@ -9,7 +9,7 @@
     <tr>
         <td style="border-collapse:collapse;border-radius:2px;text-align:center;display:block;border:solid 1px ${color_button}">
             <a href="${url}" style="text-decoration:none;display:block" target="_blank">
-                <center style="padding:7px 16px 11px 16px">
+                <center style="padding:11px 20px">
                     <font size="3">
                         <span style="${sans_style};font-weight:700;font-size:15px;line-height:14px;color:${color_button};white-space:nowrap;vertical-align:middle">${_(title)}</span>
                     </font>
diff --git a/kallithea/tests/models/test_dump_html_mails.ref.html b/kallithea/tests/models/test_dump_html_mails.ref.html
--- a/kallithea/tests/models/test_dump_html_mails.ref.html
+++ b/kallithea/tests/models/test_dump_html_mails.ref.html
@@ -135,7 +135,7 @@ View Comment: http://comment.org
     <tr>
         <td style="border-collapse:collapse;border-radius:2px;text-align:center;display:block;border:solid 1px #395fa0">
             <a href="http://comment.org" style="text-decoration:none;display:block" target="_blank">
-                <center style="padding:7px 16px 11px 16px">
+                <center style="padding:11px 20px">
                     <font size="3">
                         <span style="font-family:Helvetica,Arial,sans-serif;font-weight:700;font-size:15px;line-height:14px;color:#395fa0;white-space:nowrap;vertical-align:middle">View Comment</span>
                     </font>
@@ -294,7 +294,7 @@ View Comment: http://comment.org
     <tr>
         <td style="border-collapse:collapse;border-radius:2px;text-align:center;display:block;border:solid 1px #395fa0">
             <a href="http://comment.org" style="text-decoration:none;display:block" target="_blank">
-                <center style="padding:7px 16px 11px 16px">
+                <center style="padding:11px 20px">
                     <font size="3">
                         <span style="font-family:Helvetica,Arial,sans-serif;font-weight:700;font-size:15px;line-height:14px;color:#395fa0;white-space:nowrap;vertical-align:middle">View Comment</span>
                     </font>
@@ -471,7 +471,7 @@ View Comment: http://comment.org
     <tr>
         <td style="border-collapse:collapse;border-radius:2px;text-align:center;display:block;border:solid 1px #395fa0">
             <a href="http://comment.org" style="text-decoration:none;display:block" target="_blank">
-                <center style="padding:7px 16px 11px 16px">
+                <center style="padding:11px 20px">
                     <font size="3">
                         <span style="font-family:Helvetica,Arial,sans-serif;font-weight:700;font-size:15px;line-height:14px;color:#395fa0;white-space:nowrap;vertical-align:middle">View Comment</span>
                     </font>
@@ -648,7 +648,7 @@ View Comment: http://comment.org
     <tr>
         <td style="border-collapse:collapse;border-radius:2px;text-align:center;display:block;border:solid 1px #395fa0">
             <a href="http://comment.org" style="text-decoration:none;display:block" target="_blank">
-                <center style="padding:7px 16px 11px 16px">
+                <center style="padding:11px 20px">
                     <font size="3">
                         <span style="font-family:Helvetica,Arial,sans-serif;font-weight:700;font-size:15px;line-height:14px;color:#395fa0;white-space:nowrap;vertical-align:middle">View Comment</span>
                     </font>
@@ -851,7 +851,7 @@ View User Profile: http://newbie.org
     <tr>
         <td style="border-collapse:collapse;border-radius:2px;text-align:center;display:block;border:solid 1px #395fa0">
             <a href="http://newbie.org" style="text-decoration:none;display:block" target="_blank">
-                <center style="padding:7px 16px 11px 16px">
+                <center style="padding:11px 20px">
                     <font size="3">
                         <span style="font-family:Helvetica,Arial,sans-serif;font-weight:700;font-size:15px;line-height:14px;color:#395fa0;white-space:nowrap;vertical-align:middle">View User Profile</span>
                     </font>
@@ -1025,7 +1025,7 @@ View Pull Request: http://pr.org/7
     <tr>
         <td style="border-collapse:collapse;border-radius:2px;text-align:center;display:block;border:solid 1px #395fa0">
             <a href="http://pr.org/7" style="text-decoration:none;display:block" target="_blank">
-                <center style="padding:7px 16px 11px 16px">
+                <center style="padding:11px 20px">
                     <font size="3">
                         <span style="font-family:Helvetica,Arial,sans-serif;font-weight:700;font-size:15px;line-height:14px;color:#395fa0;white-space:nowrap;vertical-align:middle">View Pull Request</span>
                     </font>
@@ -1199,7 +1199,7 @@ View Pull Request: http://pr.org/7
     <tr>
         <td style="border-collapse:collapse;border-radius:2px;text-align:center;display:block;border:solid 1px #395fa0">
             <a href="http://pr.org/7" style="text-decoration:none;display:block" target="_blank">
-                <center style="padding:7px 16px 11px 16px">
+                <center style="padding:11px 20px">
                     <font size="3">
                         <span style="font-family:Helvetica,Arial,sans-serif;font-weight:700;font-size:15px;line-height:14px;color:#395fa0;white-space:nowrap;vertical-align:middle">View Pull Request</span>
                     </font>
@@ -1364,7 +1364,7 @@ View Comment: http://pr.org/comment
     <tr>
         <td style="border-collapse:collapse;border-radius:2px;text-align:center;display:block;border:solid 1px #395fa0">
             <a href="http://pr.org/comment" style="text-decoration:none;display:block" target="_blank">
-                <center style="padding:7px 16px 11px 16px">
+                <center style="padding:11px 20px">
                     <font size="3">
                         <span style="font-family:Helvetica,Arial,sans-serif;font-weight:700;font-size:15px;line-height:14px;color:#395fa0;white-space:nowrap;vertical-align:middle">View Comment</span>
                     </font>
@@ -1529,7 +1529,7 @@ View Comment: http://pr.org/comment
     <tr>
         <td style="border-collapse:collapse;border-radius:2px;text-align:center;display:block;border:solid 1px #395fa0">
             <a href="http://pr.org/comment" style="text-decoration:none;display:block" target="_blank">
-                <center style="padding:7px 16px 11px 16px">
+                <center style="padding:11px 20px">
                     <font size="3">
                         <span style="font-family:Helvetica,Arial,sans-serif;font-weight:700;font-size:15px;line-height:14px;color:#395fa0;white-space:nowrap;vertical-align:middle">View Comment</span>
                     </font>
@@ -1712,7 +1712,7 @@ View Comment: http://pr.org/comment
     <tr>
         <td style="border-collapse:collapse;border-radius:2px;text-align:center;display:block;border:solid 1px #395fa0">
             <a href="http://pr.org/comment" style="text-decoration:none;display:block" target="_blank">
-                <center style="padding:7px 16px 11px 16px">
+                <center style="padding:11px 20px">
                     <font size="3">
                         <span style="font-family:Helvetica,Arial,sans-serif;font-weight:700;font-size:15px;line-height:14px;color:#395fa0;white-space:nowrap;vertical-align:middle">View Comment</span>
                     </font>
@@ -1895,7 +1895,7 @@ View Comment: http://pr.org/comment
     <tr>
         <td style="border-collapse:collapse;border-radius:2px;text-align:center;display:block;border:solid 1px #395fa0">
             <a href="http://pr.org/comment" style="text-decoration:none;display:block" target="_blank">
-                <center style="padding:7px 16px 11px 16px">
+                <center style="padding:11px 20px">
                     <font size="3">
                         <span style="font-family:Helvetica,Arial,sans-serif;font-weight:700;font-size:15px;line-height:14px;color:#395fa0;white-space:nowrap;vertical-align:middle">View Comment</span>
                     </font>
@@ -2077,7 +2077,7 @@ View Comment: http://pr.org/comment
     <tr>
         <td style="border-collapse:collapse;border-radius:2px;text-align:center;display:block;border:solid 1px #395fa0">
             <a href="http://pr.org/comment" style="text-decoration:none;display:block" target="_blank">
-                <center style="padding:7px 16px 11px 16px">
+                <center style="padding:11px 20px">
                     <font size="3">
                         <span style="font-family:Helvetica,Arial,sans-serif;font-weight:700;font-size:15px;line-height:14px;color:#395fa0;white-space:nowrap;vertical-align:middle">View Comment</span>
                     </font>
@@ -2259,7 +2259,7 @@ View Comment: http://pr.org/comment
     <tr>
         <td style="border-collapse:collapse;border-radius:2px;text-align:center;display:block;border:solid 1px #395fa0">
             <a href="http://pr.org/comment" style="text-decoration:none;display:block" target="_blank">
-                <center style="padding:7px 16px 11px 16px">
+                <center style="padding:11px 20px">
                     <font size="3">
                         <span style="font-family:Helvetica,Arial,sans-serif;font-weight:700;font-size:15px;line-height:14px;color:#395fa0;white-space:nowrap;vertical-align:middle">View Comment</span>
                     </font>
@@ -2447,7 +2447,7 @@ View Comment: http://pr.org/comment
     <tr>
         <td style="border-collapse:collapse;border-radius:2px;text-align:center;display:block;border:solid 1px #395fa0">
             <a href="http://pr.org/comment" style="text-decoration:none;display:block" target="_blank">
-                <center style="padding:7px 16px 11px 16px">
+                <center style="padding:11px 20px">
                     <font size="3">
                         <span style="font-family:Helvetica,Arial,sans-serif;font-weight:700;font-size:15px;line-height:14px;color:#395fa0;white-space:nowrap;vertical-align:middle">View Comment</span>
                     </font>
@@ -2635,7 +2635,7 @@ View Comment: http://pr.org/comment
     <tr>
         <td style="border-collapse:collapse;border-radius:2px;text-align:center;display:block;border:solid 1px #395fa0">
             <a href="http://pr.org/comment" style="text-decoration:none;display:block" target="_blank">
-                <center style="padding:7px 16px 11px 16px">
+                <center style="padding:11px 20px">
                     <font size="3">
                         <span style="font-family:Helvetica,Arial,sans-serif;font-weight:700;font-size:15px;line-height:14px;color:#395fa0;white-space:nowrap;vertical-align:middle">View Comment</span>
                     </font>