[geary/mjog/mail-merge-plugin: 72/72] MailMerge.Folder: Throttle sending rate to 30 per minute

[Michael Gratton <mjog src gnome org>]

commit c3c134f09ac620203e756ae3580a30ef243b2423
Author: Michael Gratton <mike vee net>
Date:   Sat Aug 15 11:37:14 2020 +1000

    MailMerge.Folder: Throttle sending rate to 30 per minute

 src/client/plugin/mail-merge/mail-merge-folder.vala | 4 ++++
 1 file changed, 4 insertions(+)
---
diff --git a/src/client/plugin/mail-merge/mail-merge-folder.vala 
b/src/client/plugin/mail-merge/mail-merge-folder.vala
index 404e55a07..bd6cafca7 100644
--- a/src/client/plugin/mail-merge/mail-merge-folder.vala
+++ b/src/client/plugin/mail-merge/mail-merge-folder.vala
@@ -385,6 +385,10 @@ public class MailMerge.Folder : Geary.AbstractLocalFolder {
                     this.composed.unset(id);
                     this._properties.set_total(last);
                     notify_email_removed(Geary.Collection.single(id));
+
+                    // Rate limit to ~30/minute for now
+                    GLib.Timeout.add_seconds(2, this.send_loop.callback);
+                    yield;
                 } catch (GLib.Error err) {
                     warning("Error sending merge email: %s", err.message);
                     send_error(err);