Formatting email text

[admin]

I've tried to re-create this issue and it seems that the message source won't be helpful here.
Try this reworked script with extra line breaks and see if it helps.

Code:

value = event.getvalue()

require('user.sendmail')
require('user.emails')

header_alarm = 'Tere! <br><br> <b>SV1</b> automaatikasüsteemis on tuvastatud järgmised häired: <br><br>'
header_ok = 'Tere! <br><br> <b>SV1</b> automaatikasüsteemi häired on taastunud ning süsteem on töökorras.<br><br>Kokkuvõte häiretest: <br><br>'

footer = '<br><br><br><br><i>Email on genereeritud automaatikasüsteemi poolt. Palume mitte sellele emailile vastata!<br><br>Parimate soovidega,<br>Building Automation System OÜ</i>'

text_alarm = ' - <span style="color:red;font-weight:bold">ALARM!</span><br>'
text_ok = ' - <span style="color:green;font-weight:bold">OK</span><br>'

buf = {}

buf[ #buf + 1 ] = value > 0 and header_alarm or header_ok

alarms = grp.tag('SV1-ALARMS')

for _, alarm in ipairs(alarms) do
  buf[ #buf + 1 ] = alarm.name
  buf[ #buf + 1 ] = alarm.value and text_alarm or text_ok
end

buf[ #buf + 1 ] = footer

message = table.concat(buf, '\n')

res, err = mail(emails, 'Hooneautomaatika', message)
grp.checkupdate('38/4/6', err ~= nil)